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Dreamer, You can check your measuring tape...the other side should be metric.

I taped an old measuring tape onto my ruler so I didn't have to switch back and forth. Worked just fine for the project.

now you've been told already what the measurements mean.
But with us here in the netherlands ofcourse it's the other way around.
Because it's almost impossible to do the math and get it 100% right I think indeed the best advise is to get a metric ruler.
I'm working with inch-rulers all the time when I'm quilting

Quote:

Originally Posted by dreamer2009 (Post 5637925)

working with a brain injury here.
think I got the gist of what to do on that site.
not sure I understand the (mm) part.
6mm = 0.23622"...............don;t understand in my head what it is saying.

25cm = 9.84252" am assuming this is just over 9"

Yes, 25 cm is just over 9 inches... I'm a retired science teacher and the "metric" system works so well for science... all units are based on 10s... much easier to convert from one unit to another... but not much easier when trying to convert from one measuring system to another... 1 mm (millimeter) is only 1/10th of a centimeter... very small unit... well, look at the width of a pencil lead.. If you have mechanical pencils they are often .7 mm wide! And that's only .7 of a mm!! so 1mm is a very small distance. It takes 10 mm to make 1 cm (centimeter). One inch is 2.5 cm.. Now I know this is confusing, so the best thing is to use one of the conversion sites. Just be sure you are going from metric (cm) to the more familiar (inches)... Good luck!!

Quote:

Originally Posted by dreamer2009 (Post 5637854)

50cm = ?
25cm = ?
15cm = ?
12cm = ?
5cm = ?

25mm = ?
6mm = ?

Are you aware that most straight quilting rulers (most rulers period) have centermeters on one side. Just use that side and not the inch side.

Quote:

Originally Posted by woody (Post 5637999)

50cm = 19 and 5/8"
25cm =about 9 and 7/8"
15cm = about 5 and 7/8"
12cm = 4 and 3/4 inches
5cm = just a whisker under 2"

25mm = 1"
6mm = pretty close to 1/4"

I hope this helps a bit, are you able to get rulers from your stationery store that has centimetres and milimetres? Then you could just put it on your inch ruler and convert them that way.

No need to go to stationary store--------------USE YOUR OWN rulers that you already have. The straight rulers have metric measures on one side, inches on the other.

Quote:

Originally Posted by woody (Post 5637999)

If the measurements are given in metric------------USE METRIC. It's on the ruler you have. No need at all to convert. What's more, web site or not, it's way too easy for any of us to mess up conversions.

Probably no one here cares, but a meter is 39.37 inches.

Quote:

Originally Posted by dreamer2009 (Post 5638046)

thanks woody...that makes much better sense.
will look for the ruler on ebay right now.
hugs ...you rock !!

Look at the ruler on your quilting table first. I'll bet you have centimeters.

GrannieAnnie, none of my quilting rulers have metric. That would be very confusing, since there's enough markings on them already. Where are you finding ones that do? (Not that I need or want them, just wondering.)